Coronary artery bypass surgery (also called coronary artery bypass grafting or CABG) is a treatment for patients with coronary artery disease.
Coronary artery disease (CAD) is narrowing or blockage of one or more of the coronary arteries that supply oxygen-rich blood to the heart. It is common for three or four coronary arteries to be bypassed during surgery.
Coronary artery bypass surgery restores normal blood flow to the heart by creating a “detour” (bypass) around the blocked artery/arteries. This is done by using a healthy blood vessel, called a graft. Grafts usually come from your own arteries and veins located in the chest, leg or arm. The graft creates a new pathway to carry oxygen-rich blood to the heart.